Siemens manual L-828CCRs LC-Type4, 7.5, and 10 kW/6.6 A/60 Hz, Troubleshooting, Problem

L-828 CCRs LC-Type (4, 7.5, and 10 kW/6.6 A/60 Hz) Troubleshooting

4.General Troubleshooting Procedures (contd.)

Problem	Possible Cause	Corrective Action
5. Regulator shuts	Open-circuit protection fails	Test the load for open-circuit condition.
down from open-		Then short the CCR’s output TB1 and
circuit protection		check for normal operation. Refer to
(red LED lit)		calibration instructions in Calibrating
		Regulators in the Installation section.
		Repair lighting loop.
	Contactor K1 defective	Inspect contacts of contactor K1. Replace
		contactor K1, if necessary.
	Transformer T5 or R5 (on panel)	Inspect T5 or R5. Replace, if necessary.
	defective
	Contactor K1 coil fails	Turn the CCR on and off repeatedly. If
		green LED indicator for REGULATOR ON
		lights but contactor K1 does not click on,
		replace contactor K1.
	Control PCB failed	If turning CCR on and off doe not light
		REGULATOR ON LED, then replace Control
		PCB.
6. Incorrect CCR	CCR not properly calibrated	Refer to calibration instructions in
output current		Calibrating Regulators in the Installation
		section.
	Control PCB failed	Replace Control PCB if CCR does not
		calibrate properly.
7. W VA-Indicator red	Too many burned out lamps in	Replace burned out lamps.
LED light lit	lighting loop
	Load demand greater than 4% over –	Reduce load or obtain a CCR with a higher
	5% input voltage on a 4 kW or 7.5 or	kW rating.
	10 kW CCR
	Half-power tap was selected on TB6	Move wire #200 from TB6 terminal 2 to
	terminal 2, and load demand requires	TB6 terminal 1.
	more than ½ of the CCR’s rated
	output power
	Input voltage low for the required	Provide required voltage to CCR.
	voltage, as selected on CCR’s TB5
	NOTE: Measure voltage at the input
	of CCR TB3 with the CCR in operation.
		Continued on next page

 2002 Siemens Airfield Solutions, Incorporated	96A0104B	Page 6-5
All rights reserved	Issued 6/02